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No. 6l6,755. Patented Dec. 27, I898.

J. A. WILLIAMS.

BINDING POST FDR-.ELECTRIBAL, TELEPHONIC,0R TELEGRAPHIC INSTRUMENTS.

(Application filed may 25, 1898.)

m: Nomus PETERS co, PHoTouwo" wsuwomw. u. c

UNITED STATES PATENT Erica,

JOSEPH A. WILLIAMS, OF CLEVELAND, OHIO, ASSIGNOR TO THE WILLIAMSELECTRIC COMPANY, OF SAME PLACE.

BINDING-POST FOR ELECTRICAL, TELEPHONIC, 0R TELEGRAPHIC INSTRUMENTS.

SPECIFICATION forming part of Letters Patent No. 616,755, dated December27, 1898. Application filed May 25, 1898. Serial No. 681,728. (Nomodel.)

To all whom it may concern:

7 Be it known that I, JOSEPH A. WILLIAMS, of Cleveland, county ofOuyahoga, and State of Ohio, have invented certain new and usefulImprovements in Binding-Posts for Electrical, Telephonie, or TelegraphicInstruments; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it pertains to make and use the same.

My invention relates to improvements in binding-posts for electrical,telephonic, and telegraphic instruments, and more especially to abinding-post designed for the wires that lead to and from atelephone-receiver or other instrument that is exposed to carelesshandling or rough usage.

The object of the invention is to provide a post to which theconnecting-wire is so held as to maintain adequate contact between thewire and the post and that is durable and exceedingly simple inconstruction.

WVith this object in view the invention consists in certain features ofconstruction and combinations of parts hereinafter described, andpointed out in the claims.

In the accompanying drawings, Figure I is aview of the rear end of atelephone-receiver provided with my improved binding-post. Fig. II is avertical section on line II II, Fig.

I. Fig. III is a vertical section on line III III, Fig. I.

Referring to the drawings, Adesignates the case of a telephone-receiver,and B one of the binding-posts attached to the rear end of the receiver.

My improved binding-post comprises a plate a. This plate is preferablyoblong and is provided with two holes a a, formed in opposite ends,respectively, of the plate for the purpose of accommodating thereception of screws B, that are employed in securing the plate to thereceiver or instrument. Plate a at or near its central portion isprovided with a hole a for accommodating the location and operation of ascrew O, that forms a part of the binding-post. The said screw extendsthrough a correspondingly threaded hole formed in the case of thereceiver or instrument and at its outer end is provided with a head,collar, or laterally-projecting member 0, that overlaps and engages thetip of the wire D, connecting with the said post. The said head bearsupon the wire and holds the latter to its seat, that is formed upon asaddle with which plate a is provided. Plate (0 is preferably asheet-metal piece, and the wireengaging saddle consists, preferably, oftwo members a a projecting or bent outwardly from and integral with thesaid plate, and the said two outwardly-bent saddle-formin g members ofthe plate are provided with depressions or recesses a for receiving thewire and form outwardly-diverging springs that act in 6 the direction topress the wire against the screws head when the screw has been screwedinwardly far enough to exert a pressure upon the said springs. It willbe observed that the said springs are formed between the plate and thescrews head at one side of the screws shank, and the 'plate at theopposite side of the shank and between the screws head and the plate hasan outwardly-projecting stopforming flange of, that limits the inwardmove- 7 5 ment of the screw and projects outwardlyfar enough to arrestthe inward movement of the screw before the latter has exerted an unduepressure upon the springs.

I would have it understood that my invention is not limited to the exactdetails of the preferred construction illustrated, but embraces,broadly, such a relative arrangement of a spring and alaterally-projecting member upon the wire-connecting screw of abindingpost as will cause the wire to be clamped between the spring andthe said member of the screw and maintain by means of the said spring anadequate contact between the screw and the wire.

IVhat I claim is- 1. A binding-post of the character indicated,comprising a plate, a saddle or bearing for the wire, a screw having ahead or member overlapping the saddle, and a stop ar- 5 ranged to limitthe inward movement of the screw, substantially as set-forth.

2. A bindingpost of the character indicated, comprising a screw having ahead, collar or laterally projecting member, and a 100 spring at oneside of the screws shank, and the relative arrangement of the saidspring cated, comprising a plate, a screw provided with a bent collar orlaterally-projecting member, and a spring at one side of the screwsshank and between the plate and the said member of the screw and formedby an outwardly-projecting member of the plate, substantiall y as andfor the purpose set forth.

4. A binding-post of the character indicated, comprising a plate, ascrew having a head, collar or laterally-projecting member, and a springat one side of the screws shank and between the plate and the saidmember of the screw and formed by two outwardlyprojecting members of theplate arranged a suitable distance apartand in position to form twobearings for the wire, substantially as and for the purpose set forth.

5. A binding-post of the character indicated, comprising a screwhavingahead, collar or laterally -projecting member, and a spring at oneside of the screws shank and having a wire-receiving depression orrecess opposite the inwardly-facing surface of the said member of thescrew, substantially as and for the purpose set forth.

6. A binding-post of the character indicated, comprising a plate, ascrew having a head, collar or laterally-projecting member, and springsarranged betweee'n the plate and the said member of the screw and formedby two members projecting and diverging outwardly from and integral withthe plate and provided with, depressions or recesses in their outerends, substantially as and for the purpose set forth.

7. A binding-post of the character indicated, comprising a plate, ascrew having a head, collar or laterally-projectingmember, a springbetween the plate and the said member of the screw, and a flange formedupon the plate in position to be engaged by the said member of the screwwhen the latterhas been actuated inwardly far enough to cause a wireinterposed between it and the spring to place the spring under tension,substantially as set forth.

8. The combination with the instrument; of the binding-post comprisingthe following: a plate secured to the instrument; a screw extendingthrough the said plate and engaging a correspondingly-threaded hole inthe instrument and having a head, collar or laterally-projecting member;a spring formed upon the plate between the plates body portion and thesaid member of the screw, and a stop for limiting the inward moving ofthe screw upon screwing the latter inwardly, sub stantially as and forthe purpose set forth.

Signed by me, at Cleveland, Ohio, this 24th day of May, 1898.

JOSEPH A. \VILLIAHS. lVitn esses:

0. II. DORER, A. II. PANETT.

